Roaming on Verizon

[Wizzzkid]

I have a friend that lives in Canada and is using the Maxx HD on the Telus network. He asked me a question that I can not find an answer to. When using a Canadian SIM card on this phone, and when they travel to the U.S., will this phone work? Almost all Canadian phones are made to roam on the AT&T/T-mobile network when they come over to the U.S. because of the similar network bands (GSM). Is there a way to force the phone to roam back to CDMA and hop on the Verizon network for roaming??